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发明名称
Dispositif de projection cinématographique utilisant des films de formats différents
摘要
申请公布号
FR831029(A)
申请公布日期
1938.08.18
申请号
FRD831029
申请日期
1937.03.31
申请人
发明人
BALLUE LOUIS
分类号
G03B1/50
主分类号
G03B1/50
代理机构
代理人
主权项
地址
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